Portland's SoloPower Systems has missed another monthly payment on a $10 million public loan that's been in arrears since February.

A state Energy Department spokesperson confirmed Monday the agency had not received $119,000, as required, for June.

SoloPower had some cash -- it wired $124,950 to the state in late May -- but is now behind by a total of $238,000.

State officials in charge of the loan have said they are hopeful SoloPower will soon bring the loan current. Company executives, though, have declined to comment on financials.

SoloPower's North Portland plant has been dark for a year.

In an email to The Oregonian Tuesday, company president Robert Campbell said the intent is "to be fully up to date with our obligations to the (Oregon Department of Energy) once we have closed on our larger round of financing."

Energy Department spokeswoman Diana Enright said SoloPower is "close" to wrapping up fundraising talks and expects to complete agreements yet this month.

Executives are now "getting contracts in place in order to begin ramping up its production facility," Enright wrote in an email to The Oregonian.

The restart would breathe some life into a factory once envisioned as a hub of Oregon's clean-energy sector. Public officials and company executives said SoloPower would employ hundreds of people making thin-film photovoltaic solar panels.

It received millions of dollars in state and local tax breaks and subsidies to start up.

Yet it closed in mid-2013, months after turning on its first production line.